A320864 - OEIS

A320864

Powers of 2 with initial digit 8.

8, 8192, 8388608, 8589934592, 8796093022208, 81129638414606681695789005144064, 83076749736557242056487941267521536, 85070591730234615865843651857942052864, 87112285931760246646623899502532662132736, 89202980794122492566142873090593446023921664

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OFFSET

1,1

LINKS

Muniru A Asiru, Table of n, a(n) for n = 1..170

Index to divisibility sequences

MAPLE

select(x->"8"=""||x[1], [2^n$n=0..200])[];

MATHEMATICA

Select[2^Range[200], IntegerDigits[#][[1]] == 8 &] (* Amiram Eldar, Nov 21 2018 *)

PROG

(GAP) Filtered(List([0..200], n->2^n), i->ListOfDigits(i)[1]=8);

(PARI) select(x->(digits(x)[1]==8), vector(200, n, 2^n)) \\ Michel Marcus, Nov 21 2018

CROSSREFS

Cf. A000079 (powers of 2), A008952 (leading digit of 2^n), A217401 (numbers starting with 8).

Powers of 2 with initial digit k, (k = 1..8): A067488, A067480, A320859, A320860, A320861, A320862, A320863, this sequence.

Sequence in context: A079656 A114773 A057107 * A052152 A189250 A217025

Adjacent sequences: A320861 A320862 A320863 * A320865 A320866 A320867

KEYWORD

base,nonn

AUTHOR

Muniru A Asiru, Nov 21 2018

STATUS

approved